Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/65-17 | 235/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28 (711.3) | 30.03 (762.7) | 2.02 (51.4) 7.2% |
| Width inches (mm) | 8.46 (215) | 9.25 (235) | 0.79 (20) 9.3% |
| Circum. inches (mm) | 87.98 (2234.61) | 94.33 (2396.09) | 6.36 (161.48) 7.2% |
| Sidewall Height inches (mm) | 5.5 (139.75) | 6.01 (152.75) | 0.51 (13) 9.3% |
| Revolutions per mile (km) | 720.19 (447.5) | 671.65 (417.35) | -48.54 (-30.16) -6.7% |
235/65-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.45 mph (34.51 km/h) |
| 25 mph (40.23 km/h) | 26.81 mph (43.14 km/h) |
| 30 mph (48.28 km/h) | 32.17 mph (51.77 km/h) |
| 35 mph (56.33 km/h) | 37.53 mph (60.4 km/h) |
| 40 mph (64.37 km/h) | 42.89 mph (69.03 km/h) |
| 45 mph (72.42 km/h) | 48.25 mph (77.65 km/h) |
| 50 mph (80.47 km/h) | 53.61 mph (86.28 km/h) |
| 55 mph (88.51 km/h) | 58.97 mph (94.91 km/h) |
| 60 mph (96.56 km/h) | 64.34 mph (103.54 km/h) |
| 65 mph (104.61 km/h) | 69.7 mph (112.17 km/h) |
| 70 mph (112.65 km/h) | 75.06 mph (120.79 km/h) |
| 75 mph (120.7 km/h) | 80.42 mph (129.42 km/h) |
| 80 mph (128.75 km/h) | 85.78 mph (138.05 km/h) |
| 85 mph (136.79 km/h) | 91.14 mph (146.68 km/h) |
| 90 mph (144.84 km/h) | 96.5 mph (155.31 km/h) |
| 95 mph (152.89 km/h) | 101.86 mph (163.94 km/h) |
| 100 mph (160.93 km/h) | 107.23 mph (172.56 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1709 | 1986 | 2138 | 2233 | 2335 | 2407 | 2487 | 2582 | 2713 | 2844 | 2989 | 3106 | 3317 | 3549 | 3731 | 3848 | 3913 | 4153 | 4488 | 5215 |
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